>>91402170CCV is basically irrelevant to Cover: they want to sell merch, and they think songs, clips, and video games are the best way to do that. Streaming is just kinda something they suffer now.
That's also why the subs don't matter: Cover only mentions sub count in investor reports as it relates to gens, because it's better to sell merch for a full group with constantly growing interest than it is to sell merch for one popular person.
As an example, if somebody like Fuwamoco, there's a decent chance they'll also like one or two of the other members of Advent and buy their merch at the same time, if only as a momento of the whole group. Cover doesn't care who among Advent that would be, only that it happens.
As such, Fauna leaving doesn't just mean losing revenue related to her; it means Bae and Kronii become less valuable as well. If Mumei ends up giving notice, even an, "I'll continue being an idol until a job opening appears" style, the value of the whole group will diminish yet further.
Since Bae's in Japan though, she'll probably be able to at least rely on some kind of nepotism to try and keep her relevant; I don't know what Kronii would do in such a case, though.
